The jury-rigged wiring for that 5 SUU config was left somewhat less than fully documented and mysterious. We got one of those aircraft handed down to the Reserves. I believe the wing guns went thru the DCU wiring for the nuke.
I fired the center-line SUU-23 on the range one day and a LAU-88 w TGM from an inboard station jettisoned at the same time. First thing I asked was, "How many hits?" primarily to substantiate for the record that I had only the CL gun selected and correctly so. Range officer said "45 hits......plus one skip hit".
(I should clarify the F-105 comment. It only maxed out around 54,000 lbs.....but handled like it weighed 70,000)